Entropic tightening of vibrated chains.

@article{Hastings2002EntropicTO,
  title={Entropic tightening of vibrated chains.},
  author={Matthew B. Hastings and Zahir Amirali Daya and E. Ben-Naim and Robert E Ecke},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2002},
  volume={66 2 Pt 2},
  pages={
          025102
        }
}
We investigate experimentally the distribution of configurations of a ring with an elementary topological constraint, a "figure-8" twist. Using a system far from thermal equilibrium, a vibrated granular chain, we show that configurations where one loop is small and the second is large are strongly preferred. Despite the highly non-equilibrium nature of the system, our results are consistent with recent predictions for equilibrium properties of topologically-constrained polymers. The dynamics of… CONTINUE READING

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